Internal-combustion engine.



J. P. SIMMONS. lNTERNAL COMBUSTION ENGINE APPLICATION FILED FEB. 7,1912.

1/ 1 35 339 Patented Apr. 13, 1915.

2 SHEETS-SHEET 1.

I. P. SIMMONS.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED FEB. 7, I912.

Patented Apr.'13, 1915.

2 SHEETHHEET 2.

3 m E. SbIlS, Q35 SAN FRANGISfiQ, CALIFORNIA.

speeizloation of Letters Estent, Paigg mg fl A 13 393,55;

snplicetion filed February 5?, 1912. Serial E0. 8753M.

To (ZZZ whom it may concern: Be it known that 1, Joan P. SIMMONS, ecitizen of the United States, residing in the city and county of Sen'r-renoisoo and State of Californie, have invented certain new anduseful improvements in Internal-(loan bustion Engines, of which thefollowing is a specification.

My invention relates to the class of in ternal-combustion engines andmore particulorly to those engines of this classin which valvesotherthan puppet valves are used.

The object of my invention is'to provide an internal combustion enginewith a positive valve motion. To thus end, lemploy valves of the annularpiston type, and operate them by eccentricor crank direct, or

. Shifoggpcycls type.

through hell cranks, or by any other means required by the constructionof difierent types of engines.

My invention consists in the novel construction and arrangement of thepiston valves in connection with the internal conibustion engine, which1 shall now fully describe by reference to the accompanying drawings inwhich Figure l is 21 vertical wztion of my engine, the piston being onits intake stroke. Fig. 2 is a similar view, the piston being on itscompression stroke,v Fig. 3 is a similar view, the piston being at thecurl of its firing stroke. Fig; l is a similar view, the piston being onits scavenging stroke.

The engine here shown is of the vertical 1 15 the engine cylinder, 2 isthe engine piston, -3 is the piston rod, 4 is the engine crank, 5 is theengine shaft and ti is the on gins shell, at the lower portion or" whichis the crank case 3'. On one side of the shell, parallel with the enginecvli ale-r, is a housing 8, in the upper portion or which is formed thechamber 9 for the intake valve,

end the other side of the shel is another housing 10 parallel with thecylinder and having in its upper nortion the chamber 11 for the exhaustvalve. Both valve chambers are psrellel with the vertical axis of thecylinder, and both are included in the waterjeoketing 12 of the engine.

13 is the intake passage wh opens into the top of the intake-valveoh-webs! 9. in

this chamber 9 is fitted a removable wearing sleeve 14 on the innersurface or which near vits upper end is made an encirclinggiressureequalizing channel 35, which on the side nearest the cylinderopens through the sleeve end'torms a port 16 which registers with theintake port 1? into the upper portion of the engine cylinder 1. l

Seatecl in the sleeve let is the intake valve l8 of the annular pistontype, adapted by its reciprocation to open and to close the intake port.By reason of the encircling channel which communicates with the intakeport 17 through its own port portion 16, the side pressure on the pistonvalve 18 is equalized and soul valve is thus balanced. The intake valve18 operated by a rod '19 froni a crank 20 on a counter-shaft 21,parallel with 25, the channel at its side nearest the y1- index losingout through said sleeve to form the port 26 which registers with thescavenging inner exhaust port 2'3 leading from the upper portion of theengine cylinder. The sleeve 24- on its opposite side anal. in ahorizontal plane lower then the plane in which itsport 26 is former},has a port 28 which registers with the evenging outer exh'anst port 29leading ough the outer wall of the velve chemise: 11 to the exhaustpalssege 30.

in the cylimie limit of the piste exheiist port 31, nor lower port 32well of said sleeve 5 the same plane having the outer lower exhaust port33, which registers with the outer lower exhaust port 34 in the valvechamber wall, and which said 1 just above the lower stroke is the innerlower sh registers .With an inthe sleeve 24, the other outer port 34opens into the exhaust passage 30.

In the chamber l1, anti seated in the sleeve 2%, 18 the exhaust valve35. It IS a piston valve, In its upper portion it has a scsveng- "pistonexheost valve 35 has at its lower por- .ie the engine shaft and drivenby said' shaft.

tion annular exhaust port 39 which simultaneously controls both theinner and outer lower exhaust ports 32 and 33 of the sleeve 24. Theexhaust valve 35 is reciprocated by a rod 40 which is connected with acrank 41' on-a counter-shaft'42, set parallel with the haust ports, bothupper and lower, are closed by the exhaust valve 35.

In Fig. 2, the piston is returning on its second or compression strokeand the valves 18 and 35 have moved to close all the ports.

In Fig. 3, the piston has just finished its third or firing stroke. Theintake valve is closed, but the lower and upper exhaust 5 ports areopen, and most of the products of the explosion have passed out.

In Fig. 4, the piston is on the way up on and has nearly completed itsfourth or scavenging stroke. The intake is closed,

and the piston has itself closed the lower exhaust port, but the upperexhaust ports, both inner and outer, are still open, but are about to.close, though meanwhile the remaining burnt gases have been scavengedthrough them.' The new cycle then begins. It is to be noted that theencircling channels 15 and 25 which communicate with the interior of thecylinder and surround the .piston valves- 18 and 35 serve to equalize 40the side pressure upon them and balance them during the working strokeof the piston.

Concerning the intake piston valve 18 it need only be said that it is sodisposed and 46 operated as tocontrol the intake port at a specific'point of the stroke of the piston 2 in the engine cylinder. Theeccentric or crank which operates this intake valve is so. placed thatthe length of the 50 travel and the time that this travel registers theintake port, is one-sixth of the four strokes'of the engine piston andthe intake jportis kept closed the remaining five-sixths of the fourstrokes.

' llhe'exhaust/valve has the most particular work to perform, in that ithas to timely open and close the exhaust ports and to keep thempositively closed, to prevent pre-ignltion of the entering charge of gasthrough (so the exhaust port from other cylinders. By

7 having the piston valve 35 here shown,

this work is accomplished. By having two sets of exhaust ports, one nearthe upper end of the 'cylinder and theother lower down in the cylinderjust above the top of the engine piston whenat the lower end of itsstroke, the lower exhaust port ispartly controlled by the engine piston,which opens'it at the end ofits working stroke in order to discharge theburnt gases '(at which time the lower port 39 of the exhaust valve 35registers with it); but said lower exhaust port is again closed by theascending engine piston and is held closed by-;.-the ex haust valve 35during the intake stroke, when the engine piston again opens this port.X The port 37 in the upper end of the oxhaust valve 35 registers withthe cylinder port 27 during the scavenging stroke of the engine piston,when it againcloses against the incoming charge of fresh gas. It is tobe noted that the scavenger ports 37 and 38 in the exhaust valve 35 arecut on one side to register with the cylinder port 27 andon the otherside, lower down, to register with the port 29 into the exhaust passage30. The object of this is to provide a closing rim in the valve chamberbetween them. This makes a passage way from the cylinder through thehollow part or chamber. 36 o the valve to the exhaust port 29 in the vave chamber, and provides for the completerbalancing of the valve duringthe compression and working part of the piston stroke. Through theexhaust-valve 35 lengthwise extends the open ended hollow stem 14. Thisgives free passage of air, serving .the double purpose of cooling theparts and of preventing a vacuum above the piston.

Having thus described my invention what I claim as new and desire tosecure by Let ters Patent is 1. In an internal-combustion engine, theshell thereof having a cylinder with a piston therein, saidcylinder'having an inlet port on one'side and having on its other sidean exhaust port near its upper end and a second exhaust port lower downin position to be uncovered by the piston at the endof no its downwardmovement, said shell having on its first named side a valve chamber withwhich the inlet port communicates, and having on its other side a valvechamber with which the exhaust ports communicate, and having also anexhaust passage with which the last named valve chamber communicatesthrough an upper and a lower port; a. reciprocative piston valve seatedin the first named valve chamber to control the inlet. port; and areciprocative piston-valve seated in the second named valve chamber andprovided with upper and lower ports to re-, spectively control the upperand lower communications of itschamber with the cylinder and the exhaustpassage.

2. In an internal combustion engine, the shell thereof having a cylinderwith apiston therein, said cylinder having an inlet port on one side'andhaving on its other side an exhaust port near its upper end and a secondexhaust port lower down in position to be uncovered by the piston at theend of its downwardmovement, said shell having on its first named side avalvechamber with which the inlet port communicates and having on itsother side a valve-chamber with an upper port and a lower port whichregister respectively with the upper and the lower cylinder exhaustports, and said shell having also an exhaust passage with which thevalve chamber communicates through an upper port and a lower port, saidlast named upper port coacting with but disposed in a lower horizontalplane than the upper registering ports of the chamber and cylinder andsaid last named lower port coacting with the lower registering ports ofthe chamber and cylinder; a reciprocative piston-valve seated in thefirst named valve-chamber to control the inlet port; and areciprocative' pistonvalve seated in the second named valvechamber andprovided With an internal chamber having ports on different horizontalplanes to control the upper ports of the valve-chamber whereby a closingrim is formed in the valve-chamber, said pistonvalve being also formedwith a port to control the lower ports of the valve-chamber.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

Wm. B. BoorH, D. B. RICHARDS.

